23136407893 has 4 divisors (see below), whose sum is σ = 23374927660. Its totient is φ = 22897888128.

The previous prime is 23136407891. The next prime is 23136407911. The reversal of 23136407893 is 39870463132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8641933444 + 14494474449 = 92962^2 + 120393^2 .

It is a cyclic number.

It is not a de Polignac number, because 23136407893 - 2¹ = 23136407891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136407891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119259738 + ... + 119259931.

It is an arithmetic number, because the mean of its divisors is an integer number (5843731915).

Almost surely, 2^23136407893 is an apocalyptic number.

It is an amenable number.

23136407893 is a deficient number, since it is larger than the sum of its proper divisors (238519767).

23136407893 is an equidigital number, since it uses as much as digits as its factorization.

23136407893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238519766.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 23136407893 in words is "twenty-three billion, one hundred thirty-six million, four hundred seven thousand, eight hundred ninety-three".